I wasn't following this very closely, but 151 m in Prizma is with that antenna. In this case Saffron square in Croydon is also should have 150+, as it has the similarly designed antenna.

Iset is toped out?

1) At Prizma not worth antenna. It stands spire. He is considered in the calculation of height. Similarly Saffron square has a height of exactly 150 meters (http://www.skyscrapercity.com/showthread.php?t=1642209 international thread)
2) 2 days ago on Russian thread was declared the end of monolithic works. Remaining only glass and crown

I think Opera Tower which is currently under construction should make a fourth addition to the over 150m+ in Yekaterinburg, that will be followed by the Twin Nekolayvskey towers,roughly after 3 years Yekaterinburg might have 6 towers over 150m+, is that true that Ural Tower which is over 380m plus will be constructed after Iset Tower?